QVII) Give reason for the following:
1. Light travels in a straight line​

Answers

Answer 1

Shadows are evidence of light travelling in straight lines. An object blocks light so that it can't reach the surface where we see the shadow. Light fills up all of the space before it hits the object, but the whole region between the object and the surface is in shadow.

Answer 2

Explanation:

Since the wavelength of light is very small as compared with the size of ordinary object and diffraction of light is not easily noticed and hence the light appears to travel in a straight line.

I hope this was ur answer and I hope this might help u


Related Questions

I need help with this question

Answers

Answer:

It is Nervous and Muscular

Explanation:

Which of these phylogenetic trees depicts a different evolutionary history than the others?









A. Tree 1
B Tree 2
C tree 3
D tree 4

Answers

I would say tree 3 because it just looks different overall

Tree 3 depicts a different evolutionary history than the others. So, the correct option is C.

What is Phylogenetic relationship?

A phylogenetic tree is defined as a branching diagram or a tree that shows the evolutionary relationships between different biological species or other entities based on similarities and differences in their physical or genetic characteristics. All life on Earth is part of a single phylogenetic tree that points to common ancestry.

These relationships are identified by using the similarities in DNA, RNA, or protein sequences, or by comparing the anatomical features. Through this, we get to know that all life arises from a common ancestor. In the above given information, Tree 3 shows the phylogenetic relationship.

Thus, Tree 3 depicts a different evolutionary history than the others. So, the correct option is C.

Learn more about Phylogenetic relationship, here:

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GUYS GUYS PLEASE ANSWER QUICK HELP!!!! 20 points!!!

Answers

Answer:

1

Explanation:

if their feeding overlaps in fall and not summer than 1 is the answer

what are the diseases of defective receptor function​

Answers

Thyroid disease , effects the receptors of thyroid hormones

An example elements nutrients faculative nutients in tissue plants N and Fe:
a. False
O b. True

Answers

the answer might be true

Which two body systems?? Let me know

Answers

Answer:

They are the digestive and the respiratory systems (O2 as nutrient and CO2 as waste)

Answer:

Most likely Excretory and Digestive

All other organisms in a community are consumers, also called:
O a. Carcasses
b. Heterotrophs
Ос. ВОТН

Answers

Answer: B. Heterotroph

Explanation:

The organism is getting nutrients from other living organisms.

What extinct animals are cats related to?

Answers

Answer:

smilodon is kinda like a cat but just the body and teeth are more bigger than a regular cat

explain what is crossing-over in your own words

Answers

Explanation:

it occurs during meiosis. Its the exchange of chromosome pieces between the non-sister chromatids during the production of gametes.

Answer:

Crossing-Over is a DNA segment on each chromosome section may code for eye color, although one chromosome may code for brown eyes and the other for blue eyes. Crossing over occurs most often between different alleles coding for the same gene.

Explanation:

how long until blowfly maggots hatch on a dead body

Answers

Answer:

c

Explanation:

Suggest three reasons why the percentages are so much higher in Sub-Saharan Africa.

Answers

Answer:

education on HIV / AIDS less effective;

sexual attitudes / number of partners ;

availability of condoms ;

poverty / poorer / less money ;

sex industry ;

less primary health care / less likely to be diagnosed

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Have a great day, be safe and healthy

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Difference between processed food and whole-grain foods relative to digestion

Answers

Answer:

What is the difference between whole and processed foods?

Whole foods are considered “nutrient dense,” meaning they contain a variety of nutrients, while foods that are heavily processed are considered to contain “empty calories.

Explanation:

Hope it helps!, Correct me if I am wrong :)

The instruction of one allele covers up the instruction of the other allele in a homologous pair. Symbolized by a capital letter. *


Recessive Allele
Dominant Allele
Heredity
Trait

Answers

Answer:

Dominant Allele

Explanation:

The Przewalski’s horse became endangered during the middle of the last century when the species experienced a population bottleneck, the result of human activity. Loss of habitat and human’s hunting them for food. What is a consequence of this type of genetic drift.

A.
Use and disuse

B.
Acquired variation

C.
Increase of genetic diversity

D.
Decrease of genetic diversity

Answers

I think it’s D
Hope this helps

When both alleles are the same the individual is what for that trait

Answers

Answer:

heterozygous

Explanation:

i can't paste the explanation here because it restricts me for some reason

hope this answered your question and have a good day

Can you help me put them in the right please asap I will mark brainly

Answers

Evaporation & transpiration, condensation, precipitation, infiltration, ground water. If there’s run off also it goes before infiltration

what is The diversity of the relationships between the living and nonliving components in
an environment?

Answers

Ecosystem

Explanation:
The relationship between the living and non-living things forms an ecosystem.
The non- living things like water, air, soil and other are required by the living organisms for leading their life cycle.
The living things forms the integral part of the natural cycling process of water, air and soil.
Thus this can be said that both living and non-living things are interdependent on each other and forms an ecosystem.
For example, if plants do not get water they will not be able to produce food also the transpiration will not occur which is an important part of the water cycle.

true or false?: If a Father has a dominant X linked trait then ALL
offspring will be affected

Answers

Answer:

true

Explanation:

Answer:

true ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ

25. Drumlins, kettle lakes, and erratics are features of which agent of
erosion?

-glacial ice
-winds
-running water
-ocean waves

Answers

Answer:

running water

Explanation:

hi how long does it take for mitosis to complete? why will most of the cells you view be in interphase?

Answers

it will take two hours and Interphase is the phase of the cell cycle in which a typical cell spends most of its life. Interphase is the 'daily living' or metabolic phase of the cell
Usually, cells will take between 5 and 6 hours to complete S phase. G2 is shorter, lasting only 3 to 4 hours in most cells. In sum, then, interphase generally takes between 18 and 20 hours. Mitosis, during which the cell makes preparations for and completes cell division only takes about 2 hours.

List two general differences between inner and outer planets.

Astronomy.

Answers

Answer:

Inner planets are smaller than the outer planets; gas giants have more gravity; Farther apart, inner planets have a solid surface, Inner planets are hotter, inner planets have a shorter period of revolution. Distance from the sun causes these differences.

Explanation:

The four inner planets have slower orbits, slower spin, no rings, and they are made of rock and metal.

The four outer planets have faster orbits and spins, a composition of gases and liquids, numerous moons, and rings.

The outer planets are made of hydrogen and helium, so they are called gas giants.

Inner planets are closer to the sun while outer planets are farther. Also, inner planets don’t have rings but some outer planets do.

Why is it a good thing to have a lot of genetic variation within a population or species?
Group of answer choices

A. If conditions change, you have a greater chance of someone having adapatations that allow them to survive and reproduce.

B. You will produce the most attractive offspring.

C. You will produce the most offspring.

Answers

Answer:

A. If conditions change, you have a greater chance of someone having adaptations that allow them to survive and reproduce.

I think the answer would be b hope it helps

A DNA base sequence of ACAGTGC would code for​

Answers

Answer:

TGTCACG

Explanation:

Using Chargaff's rule:

A=T

G=C

It can give you the complimentary strand.

The graphic shows the island of Krakatoa, which disintegrated in 1889, due to the largest volcanic eruption in recorded history. In
the century since the eruption, the island has re-formed from lava flows. The table above shows the number of species of various
plant types that were found on the island over a 30 year period, since the island re-surfaced above the ocean in the 1950's.
Which groups of plants were probably most active in secondary succession and re-establishing the native habitat?
A)
moss
B)
grasses
small trees
D
shrubs and small trees

Answers

A. Moss it it the first to grow in

DS
Question 3 of 10
In a table, an area that contains text or data for a particular row and column is
called a
O A. graph
OB. caption
O C. font
O D. cell
SUBMIT

Answers

Answer:

the answer would be D. cell

Explain how organisms contribute to the
creation of soil.

Answers

When organisms die they release the nutrients back to the soil

Explanation:

Soil formation is influenced by organisms (such as plants), micro-organisms (such as bacteria or fungi), burrowing insects, animals and humans.

As soil forms, plants begin to grow in it. The plants mature, die and new ones take their place. Their leaves and roots are added to the soil. Animals eat plants and their wastes and eventually their bodies are added to the soil.

This begins to change the soil. Bacteria, fungi, worms and other burrowers break down plant litter and animal wastes and remains, to eventually become organic matter.

Plants need
which of the
following to
undergo
photosynthesis?
A. animals
B. vegetation
D. predators
C. herbivores

Answers

I think it’s c not sure

For the situation below , determine whether the premium will likely increase , decrease, or remain the same. Jamie just turned 25

Answers

Answer:

The premium decreases when Jamie turns 25 years old.

Explanation:

The question above is about auto insurance premiums, which, as the name already says, is insurance aimed at automobiles, with the objective of promoting economic and financial protection in relation to accidents and problems that may happen in these vehicles.

When an individual turns 25, like Jamie, the insurance premium decreases in value, that is, the insurance companies offered cheaper and more economical rates to the driver when he is going to renew the contract.

**Brainiest if correct**
Write 5-6 sentences about snakes. (This is for an informational paper, make if formal!) Please don't put links/files to download because I can't download on this computer since it is the family computer. THANK YOU!

Answers

Snakes can live up to 9 years. They slither up to 18 mph. Snakes are reptiles that are elongated, limbless, and carnivorous. Another interesting thing about snakes is that they don’t have eyelids. The last fact is that snakes can open there mouths up to 150 degrees so they can swallow there prey.

Which of the following is NOT true of plants?
A. They have cell walls of cellulose
B. most of them are multicellular.
C. they are autotrophic/photosynthetic
D. they are heterotrophic

Answers

I think it’s B as well
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